Method of weaving mohair fabrics



Jan. 17, 1928. 1,656,735

F. M. KAUFMAN METHOD OF WEAVING MOHAIR FABRICS VFiled Aug. 26. 1925 2 Sheets-Shet 2 IFIG5 INVENTOR ill Patented Jan. 17, 1928.

termas UNITEDSTMES rafrsnrorrlcs.

FRANK M. Kenra/ren, er rnrLAnnLrisri-i, PENNSYLVANIA.

Application filed August 26, 1925. Serial No.

My invention relates to mohair fabrics and more especially to such fabrics when woven with designs. Silk and cotton fabrics lend themselves readily to interweaw ing of designs, butit has heretofore been found commercially impractical to weave designs upon pile fabrics althoughidesigns upon such fabrics would he especially effective. Tae non-success of prior attempts to weave designs in pile fabrics was duc to the fact that, with the method of weaving then in use, the short pile fibers were not gripped and held in position firmly enough to permit the successful interweaving of `an additional fabric without impairing the appearance of the pile fabric.

The object of my invention is to provide a method of interweaving the design* fabric without impairing the appearance of thc pile fabric. i

This object I attain in the following manner, reference being had to the accompanying drawings in which Figure l is an exaggerated fragmentary diagrammatic section through a pile fabric woven in accordance with inylinvention,

Figure 2 a like View showing an added step in the weaving,

Figure 8 a fragmentary edge view of the fabric, and j Figure a an exaggerated diagrammatic section through the fabric after splitting.

In the drawings A denotes the weft threads and B, B1, B2 and B3 the warp threads which form the backing, C and C1 the mohair strands, D the design threads, and Z, Z1 and Z2 the Zero points in the cycle of operation.

For convenience the threads composing the two pliesof the backing will be referred to as upper and lower. In weaving the fab ric one series B of the upper warp threads and one series B2 of the lower warp threads are placed under materially higher tension than the companion series B1 and B3. As a result the tight threads are held prac-tically straight and the weft threads are staggered, one being held above and the next below a straight warp thread.

Starting from Z, one mohair strand C passes over one upper weft thread, under the adjacent upper weft thread, over a third upper weft thread, then crosses diagonally to the lower ply of the backing. 'l'.he other mohair strand C1 passes under a lower weft thread, over the adjacent lower weft thread, under a third lower weft thread, then crosses diagonally to the upper ply of the backing, crossingthe other mohair strand() at ZL17 and completing a half cycle ofthe mohair weaving. Strand C passes under a lower weft thread, over theadjacent lower weft thread, under a third lower weft thread, then crosses diagonally to the upper ply of the backing. Strand Cl passes over an upper `weft thread, under the adjacent weft thread, over a third weft thread, then crosses to the under ply of the backing, crossing strand C at .Z2 and completing a cycle. of mohair weaving, after whichthe weaving proceeds as before. ln crossing from ply to ply of the backing the mohair strands avoid the weft thread directly opposite the one `last engaged and the one next adjacent so that cach strand engages with three weft threads in one ply,'then three in the other ply andso en, but leaving the weft thread, in each strand, at the point of crossing disengaged. Each mohair strand is therefore interlocked with three weft threads before it crosses to the other ply of the backing and each section of the strand is firmly gripped in place when cut. Moreover, the staggered relation of the weft threads holds the ends of the strands in substantially perpendicular position instead of allowing them to extend at an angle as-they do when the adjacent weft threads are parallel.

rlhe design threads, D, of linen or other vegetable fiber, pass under a lower weft thread, over an upper weft thread, and so on.

lleaving in accordance with this method produces, when the original product is split, a smooth and even pile surface in which the pile strands are firmly gripped and a design may be interwoven without disturbing the pile strands or otherwise injuring the fabric,

The design threads, being of vegetable liber and the pile strands of animal fiber, the design may be readily dyed of one color and the pile background of a contrastng color thereby producing aghighly attractive fabric.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent is l. A method of weaving mohair fabrics consisting in applying a higher degree of tension to one series of backing warp threads than to its companion series, thereby causing the weft threads to be staggered above and below the tight Warp threads; Weaving pile strands to interlock With three Wett threads in each ply of the backing before crossing diagonally to the other ply and leaving every fourth Wett threaddisengaged, Weaving de- 1 sign threads over certain ot the upper weft threads and under certain of said lower Wett threads in accordance with a predetermined arrangement, and splitting the two-ply product substantially as described.

2. A method of Wearing double pile fabrics consisting in applying a l'iigher degree ot tension to one series of backing warp than to its companion series, thereby causing the Wett threads to be staggered above and below the tight Warp threads; `nearing pile strands to interlock with a. plurality of weft threads in each ply of the backing before crossing diagonally to the other plyv and leaving eer tain of said weft threads disengagedy;` Wearing design strands between the two plies en* gaging predetermined Wett threads in each; the pile strands and design strands being ot animal and Vegetable fiber respectively, or vice versa, whereby the design may be dyed a different color from the body of the fabric,

and splitting the, two ply product, substanw tially as described.

3. A method of weaving doable pile fabrics consisting in applying a higher degree ot tension to one series oit barking warp threads than to its companion series= thereby causing the Wett threads to be staggered above and below the tight warp `threads to torni inner and outer weft threads, wearing pile strands to interlock with a plurality of weft threads in each ply o'l:I the backing betere crossing to the, other pl)1 and leaving certain oi said weft threads disengaged, Wearing design strands `between the tiro plies to embrace outer weft threads in the lower ply and enibrace the next successive inner weft threads in the upper ply, the pile strands and design strands being of aninial and vegetable fiber respectively, or vice versa, whereby the de sign may be dyed ay different color :troni the body ot the fabric, and splitting the two ply product, substantially as described.

In testimony whereof I have signed my naine to this speciiieation.

FRANK M. KAUFMAN. 

